13 December 2018

Edward shall be speaking about the fascinating subject of the
feature when two separate crystals share some of the same lattice points in a symmetrical manner resulting in an intergrowth of the two crystals in a variety of specific configurations referred to as ‘twins’.Edward’s talks are always interesting and well attended. He is a highly qualified mineralogist, gemmologist, educator and author of numerous papers related to his field of interest and has been a long serving member of the committee. Be sure to mark the date in your planner.